First, let me say the conclusion: plastic bags have a shelf life.

1. The shelf life of plastic packaging bags is the shelf life of the product itself.

Most plastic packaging bags are reusable, but they are limited to secondary recycling and cannot be used to repackage the product, because plastic packaging bag manufacturers will also process plastic packaging bags in the process of producing plastic packaging bags. Aseptic processing is performed by itself, especially the requirements for food packaging bags are more stringent. After the packaging bags left by plastic packaging bag manufacturers are used by food manufacturers, they will also undergo secondary sterilization, so once the goods enter the market, they are used as food packaging bags. It is definitely not possible to package food again, which is why plastic packaging bag manufacturers have always emphasized that plastic packaging bags also have a shelf life.

2. Plastic packaging bags will also undergo some qualitative changes over time.

We often find that some plastic packaging bags are particularly easy to break, or some plastic packaging bags are even glued together, and the printing patterns on the surface of some plastic packaging bags are faded, faded, etc., which are actually plastic packaging bags. Deteriorated performance. In this case, we suggest that this kind of plastic packaging bag should not be used anymore, because this kind of plastic packaging bag can no longer protect the goods.

3. It is best to choose raw materials made of new materials for plastic packaging bags.

Some plastic packaging bags seem to have no problems on the surface, but because the raw materials are mixed with recycled materials, the safety of plastic packaging bags will be affected. The reason why we attribute this type of plastic packaging bag to a deteriorated bag is that the use of this kind of plastic packaging bag to package food has a very obvious impact on the shelf life of the food itself, and indirectly shortens the shelf life of the food.

Therefore, in the process of using plastic packaging bags, we must pay attention to product quality, and use them as soon as possible, and do not store them excessively. For plastic packaging bags that have been placed for a period of time, try to do a quality inspection before using them.